OSX Mavericks Root User

Solution 1:

sudo asks for the admin password only if you haven't used the command in the last 15 minutes or so. For extended root sessions I usually run sudo -s to create a new shell with root privileges.

Solution 2:

Theoretically speaking, you could add your admin account into the wheel group, then use visudo to edit the sudoers file to allow your user account to execute commands as root. Not only would you have root privileges automatically in Terminal, it would also apply to the GUI as well (no more entering passwords when installing packages or unlocking preferences). However, granting root access to any account other than the root user is a Bad Idea and would be the Wrong Thing to do. The security ramifications of doing this are extreme, and could seriously mess up your system if you don't know what you're doing (and even if you do).

But you did want to know if it was possible.